#include<stdio.h>
//#define DEBUG 
int main(void)
{
#ifdef DEBUG                              // #if defined(DEBUG)
    printf("In debug mode");
#endif                              
#ifndef DEBUG                             // #if !defined(DEBUG)
    #define RELEASE
#endif
#ifdef RELEASE                            // #if defined(RELEASE)
    printf("In release mode");
#endif
    return 0;
}